User's Manual

ManualsBrandsMicrochip Technology ManualsElectronicsClass 1 Bluetooth 2.1 module

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www.rovingnetworks.com

Version 3.3r 10/9/2012

RN-41-DS

RN-41/RN-41-N Class 1 Bluetooth Module

Features

• Fully qualified Bluetooth

version 2.1 module, supports version 2.1 +

Enhanced Data Rate (EDR)

• Backwards-compatible with Bluetooth version 2.0, 1.2, and 1.1

• Postage stamp sized form factor, 13.4 mm x 25.8 mm x 2 mm

• Low power (30 mA connected, < 10 mA sniff mode)

• UART (SPP or HCI) and USB (HCI only) data connection interfaces

• Sustained SPP data rates: 240 Kbps (slave), 300 Kbps (master)

• HCI data rates: 1.5 Mbps sustained, 3.0 Mbps burst in HCI mode

• Embedded Bluetooth stack profiles included (requires no host stack):

GAP, SDP, RFCOMM, and L2CAP protocols, with SPP and DUN profile

support

• Bluetooth SIG qualified, end product listing

• Castellated SMT pads for easy and reliable PCB mounting

• Class 1 high power amplifier with on board ceramic RF chip antenna

(RN-41) or without antenna (RN-41-N)

• Certifications: FCC, ICS, CE

• Environmentally friendly, RoHS compliant

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Applications

• Cable replacement

• Barcode scanners

• Measurement and monitoring systems

• Industrial sensors and controls

• Medical devices

• Asset tracking

Description

The RN-41 module is a small form factor, low power, class 1 Bluetooth radio

that is ideal for designers who want to add wireless capability to their

products without spending significant time and money developing Bluetooth-

specific hardware and software. The RN-41 supports multiple interface

protocols, is simple to design in, and is fully certified, making it a complete

embedded Bluetooth solution. With its high-performance, on-chip antenna

and support for Bluetooth EDR, the RN-41 delivers up to a 3-Mbps data rate

for distances up to 100 meters. The RN-41 is also available without an

antenna (RN-41-N).

Figure 1. RN-41 Block Diagram

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Summary of content (15 pages)

PAGE 1
RN-41-DS RN-41/RN-41-N Class 1 Bluetooth Module Features • Fully qualified Bluetooth® version 2.1 module, supports version 2.1 + Enhanced Data Rate (EDR) Applications • Cable replacement • Backwards-compatible with Bluetooth version 2.0, 1.2, and 1.1 • Barcode scanners • Postage stamp sized form factor, 13.4 mm x 25.
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RN-41-DS OVERVIEW • Baud rate speeds: 1,200 bps up to 921 Kbps, non-standard baud rates can be programmed • Class 1 radio, 330’ (100 m) range, 15 dBm output transmitter, -80 dBm typical receive sensitivity • Frequency 2,402 ~ 2,480 MHz • FHSS/GFSK modulation, 79 channels at 1-MHz intervals • Secure communication, 128-bit encryption • Error correction for guaranteed packet delivery • Configuration via the local UART and over-the-air RF • Auto-discovery/pairing does not require software config
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RN-41-DS Table 4. Radio Characteristics Parameter Sensitivity at 0.1% BER RF Transmit Power Initial Carrier Frequency Tolerance Frequency (GHz) Min. Typ. Max. Bluetooth Specification Units 2.402 - -80 -86 ≤ -70 dBm 2.441 - -80 -86 -86 dBm 2.480 - -80 2.402 15.0 16.0 2.441 15.0 16.0 dBm 2.480 15.0 16.0 dBm 2.402 - 5 75 2.441 - 5 75 2.
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RN-41-DS Figure 2 shows the pinout and Table 6 describes the pins. Figure 2. RN-41/RN-41-N Pinout Table 6.
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RN-41-DS Name Description 15 Pin UART_RTS UART RTS, goes high to disable host transmitter Low level output from RN-41 Default 16 UART_CTS UART CTS, if set high, it disables transmitter Low level input to RN-41 17 USB_D+ USB port 1.
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RN-41-DS TYPICAL APPLICATION SCHEMATIC Figure 4 shows a typical application schematic. Figure 4. Application Schematic www.rovingnetworks.com Version 3.
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RN-41-DS DESIGN CONCERNS The following sections provide information on designing with the RN-41 module, including radio interference, factory reset, solder reflow profile, connection status, etc. www.rovingnetworks.com Version 3.
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RN-41-DS Reset Circuit The RN-41 contains a 1k pullup to VCC, and the reset polarity is active low. The module’s reset pin has an optional power-on-reset circuit with a delay, which should only be required if the input power supply has a very slow ramp or tends to bounce or have instability on power up. Often a microcontroller or embedded CPU I/O is available to generate the reset once power is stable.
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RN-41-DS HCI over UART In this mode, the hardware interface between the host processor and the Bluetooth module is the UART. You must interface the flow control signals between the host processor and the Bluetooth module for the HCI interface to work. Failure to do so can cause the host processor and the Bluetooth module to become out of sync and break the Bluetooth link. HCI over USB In this mode, the hardware interface between the host processor and the Bluetooth module is the USB.
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RN-41-DS If designers use Roving Networks recommended design, they can file for a permissible antenna change and use Roving Networks’ regulatory approvals. Roving Networks recommends the Yageo chip antenna for the RN-41-N module. For detailed information on this antenna, refer to the Yageo chip antenna data sheet on the Support page of the Roving Networks website at http://www.rovingnetworks.com/Support_Overview.
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RN-41-DS COMPLIANCE INFORMATION Table 9 describes the module’s compliance information. Table 9. Compliance Information (RN-41 Only) Category Country Radio Standard USA FCC ID: FCC CFR47 Part 15 C, para 15.247 Europe EN 300 328-1 Canada IC Canada ID: IC RSS-210 low power comm. device T9J-R41-1 EN 300 328-2 2.
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RN-41-DS Go to http://www.rovingnetworks.com for current pricing and a list of distributors carrying Roving Networks products. www.rovingnetworks.com Version 3.
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RN-41-DS Federal Communication Commission Interference Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
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RN-41-DS IMPORTANT NOTE: In the event that these conditions can not be met (for example certain laptop configurations or colocation with another transmitter), then the FCC authorization is no longer considered valid and the FCC ID can not be used on the final product. In these circumstances, the OEM integrator will be responsible for reevaluating the end product (including the transmitter) and obtaining a separate FCC authorization.
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RN-41-DS Copyright © 2012 Roving Networks. All rights reserved. Roving Networks is a registered trademark of Roving Networks. Apple Inc., iPhone, iPad, iTunes, Made for iPhone are registered trademarks of Apple Computer. Roving Networks reserves the right to make corrections, modifications, and other changes to its products, documentation and services at any time. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.